bcherny-claude: Command for Claude Code

.claude/commands/grill.md

grill is a command for Claude Code from 0xquinto/bcherny-claude. It costs 0 tokens per session (178 once invoked), scanned A, original, MIT.

A command for reviewing code changes as a skeptical senior engineer. It compares the current branch with the main or master branch and checks the changes for problems.

In plain words
What is it for?
Use it to review a branch, inspect every changed part, and receive specific fixes with file and line references. Run it again after making corrections.
Why use it?
It helps catch logic errors, missing tests, security issues, compatibility breaks, race conditions, and performance problems before release. It also indicates whether the changes can ship or need more work.

Command for Claude Code

Written for Claude Code: installed under .claude/.

This is 0xquinto/bcherny-claude's own configuration. It tells Claude Code how to work on bcherny-claude itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything bcherny-claude configures →

Reuse

Borrowing it

Nothing to install: this file belongs to 0xquinto/bcherny-claude. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/0xquinto/bcherny-claude/main/.claude/commands/grill.md
Clone the repo
git clone --depth 1 https://github.com/0xquinto/bcherny-claude

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for grill

README.md
[![agentmods](https://agentmods.dev/badge/commands/0xquinto/bcherny-claude/grill/github.svg)](https://agentmods.dev/commands/0xquinto/bcherny-claude/grill)
Your own site
<a href="https://agentmods.dev/commands/0xquinto/bcherny-claude/grill"><img src="https://agentmods.dev/badge/commands/0xquinto/bcherny-claude/grill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for grill

Your own site · 80×15
<a href="https://agentmods.dev/commands/0xquinto/bcherny-claude/grill"><img src="https://agentmods.dev/badge/commands/0xquinto/bcherny-claude/grill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 178 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00178
Opus 5 $0.00000 $0.00089
Sonnet 5 $0.00000 $0.00036
Haiku 4.5 $0.00000 $0.00018

Measured 9d ago against content hash c9f68afb685c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

grill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/grill.md · 17 lines

What it actually says

Adversarial code review. Don't let me ship until the changes pass your scrutiny.

Steps:

  1. Determine the base branch (main or master)
  2. Run git diff <base>...HEAD to see all changes on this branch
  3. Review every change as a skeptical staff engineer:
    • Logic errors, edge cases, race conditions
    • Missing tests for new or changed behavior
    • Breaking changes to public APIs
    • Security concerns (injection, auth, data exposure)
    • Performance regressions
  4. Rate the changes: SHIP IT / NEEDS WORK / BLOCK
  5. If NEEDS WORK or BLOCK: list each issue with file, line, and what to fix
  6. After I make fixes, re-review from step 1
  7. Only give SHIP IT when every issue is resolved
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 17 lines · 0 tokens per session scan A c9f68afb685c

Subscribe to this mod's changes

grill is a command published in the GitHub repository 0xquinto/bcherny-claude (356 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 178 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.